cyber-zero-runtime-free-agent-training

Framework for training cybersecurity agents without access to live environments. Uses CTF writeups and persona-driven LLM simulation to synthesize training trajectories, achieving performance matching proprietary systems like Claude-3.5-Sonnet.

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Repositório: ADu2021/skillXiv
Última atividade na origem: 24 de março de 2026 às 19:42
Idioma detectado do SKILL.md: inglês
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import re import json from typing import Dict, List, Tuple, Optional from dataclasses import dataclass @dataclass class CTFProblem: """Represents a CTF challenge and its solution""" name: str category: str description: solution_steps: [] tools_used: [] vulnerability_type: difficulty: : (): .problems: [CTFProblem] = [] .vulnerability_index: [, [CTFProblem]] = {} () -> [CTFProblem]: title_match = re.search(, writeup_text, re.MULTILINE) title = title_match.group() title_match category = ._detect_category(writeup_text) description = ._extract_description(writeup_text) solution_steps = ._extract_solution_steps(writeup_text) tools = ._identify_tools(writeup_text, solution_steps) vulnerability = ._extract_vulnerability(writeup_text) difficulty = ._assess_difficulty(solution_steps) problem = CTFProblem( name=title, category=category, description=description, solution_steps=solution_steps, tools_used=tools, vulnerability_type=vulnerability, difficulty=difficulty ) .problems.append(problem) vulnerability .vulnerability_index: .vulnerability_index[vulnerability] = [] .vulnerability_index[vulnerability].append(problem) problem () -> : categories = { : [, , , , ], : [, , , , ], : [, , , ], : [, , , , ], : [, , , ] } text_lower = text.lower() category, keywords categories.items(): (kw text_lower kw keywords): category () -> : lines = text.split() description_lines = [] in_description = line lines: line.lower() line.lower(): in_description = in_description line.strip() line.startswith(): description_lines.append(line) in_description line.strip().startswith(): .join(description_lines[:]) () -> []: steps = [] step_matches = re.findall( , text, re.DOTALL ) num, step_text step_matches: step = step_text.strip()[:] step: steps.append(step) steps: code_blocks = re.findall(, text, re.DOTALL) steps = [b[:] b code_blocks[:]] steps () -> []: tools = () tool_patterns = { : , : , : , : , : , : , : , : , : , : } full_text = text + + .join(steps) tool, pattern tool_patterns.items(): re.search(pattern, full_text, re.IGNORECASE): tools.add(tool) (tools) () -> : vulnerabilities = [ , , , , , , ] text_lower = text.lower() vuln vulnerabilities: vuln.replace(, ) text_lower vuln text_lower: vuln () -> : (steps) <= : (steps) <= : : () -> [CTFProblem]: [p p .problems p.category == category] () -> [CTFProblem]: .vulnerability_index.get(vuln_type, [])

from enum import Enum class AgentPersona(Enum): """Different agent personas for simulation""" CAUTIOUS = "thorough, methodical, checks assumptions" AGGRESSIVE = "tries shortcuts, tests hypotheses quickly" EXPERT = "applies known patterns, recognizes problem types" class PersonaDrivenSimulator: """Simulates agent interaction using LLM with personas""" def __init__(self, llm): self.llm = llm def simulate_agent_step(self, problem: CTFProblem, current_state: Dict, persona: AgentPersona = AgentPersona.EXPERT) -> Tuple[str, Dict]: """ Simulate single agent action step. Args: problem: CTF problem to solve current_state: Current progress/findings persona: Agent personality style Returns: (action, updated_state) """ # Build context context = self._build_context(problem, current_state, persona) # Generate action prompt = f"""{context} Based on the current situation, what is your next action? Be specific and actionable. Action:""" action = self.llm.generate(prompt, max_tokens=200).strip() # Simulate effect of action new_state = self._simulate_action_effect(action, current_state, problem) return action, new_state def _build_context(self, problem: CTFProblem, current_state: Dict, persona: AgentPersona) -> str: """Build simulation context for LLM""" persona_desc = { AgentPersona.CAUTIOUS: "You are a cautious, methodical analyst", AgentPersona.AGGRESSIVE: "You are an aggressive problem solver", AgentPersona.EXPERT: "You are an expert in cybersecurity" }[persona] context = f"""{persona_desc}. Challenge: {problem.name} Category: {problem.category} Description: {problem.description} Vulnerability Type: {problem.vulnerability_type} Tools Available: {', '.join(problem.tools_used)} Current Progress: {json.dumps(current_state, indent=2)} Solution Steps (for guidance): {chr(10).join(f'- {s}' for s in problem.solution_steps[:3])}""" return context def _simulate_action_effect(self, action: str, current_state: Dict, problem: CTFProblem) -> Dict: """Simulate the effect of an action""" new_state = current_state.copy() # Simple heuristics for effect simulation action_lower = action.lower() if 'scan' in action_lower or 'nmap' in action_lower: new_state['scanned'] = True new_state['ports_discovered'] = [22, 80, 443] elif 'connect' in action_lower or 'telnet' in action_lower: new_state['connected'] = True elif 'find' in action_lower or 'grep' in action_lower: new_state['findings'] = (new_state.get('findings', 0) + 1) elif 'exploit' in action_lower: new_state['exploit_attempted'] = True new_state['success'] = True # Simplified return new_state

@dataclass class Trajectory: """Multi-step solution trajectory""" problem: CTFProblem steps: List[Tuple[str, Dict]] # (action, resulting_state) success: bool num_steps: int class TrajectoryGenerator: """Generates synthetic problem-solving trajectories""" def __init__(self, extractor: CTFKnowledgeExtractor, simulator: PersonaDrivenSimulator): self.extractor = extractor self.simulator = simulator def generate_trajectory(self, problem: CTFProblem, persona: AgentPersona = AgentPersona.EXPERT, max_steps: int = 20) -> Trajectory: """ Generate complete trajectory for solving a problem. Args: problem: CTF problem to solve persona: Agent persona to use max_steps: Maximum trajectory length Returns: Complete trajectory from start to goal """ steps = [] current_state = { 'started': True, 'found_flags': [], 'tools_used': [] } success = False for step_num in range(max_steps): # Simulate next step action, new_state = self.simulator.simulate_agent_step( problem, current_state, persona ) steps.append((action, new_state)) current_state = new_state # Check if goal reached (simplified) if 'flag' in action.lower() or new_state.get('success'): success = True break # Bail if stalled if step_num > 10 and not new_state.get('progress', False): break return Trajectory( problem=problem, steps=steps, success=success, num_steps=len(steps) ) def generate_batch_trajectories(self, problems: List[CTFProblem], batch_size: int = 10) -> List[Trajectory]: """Generate trajectories for multiple problems""" trajectories = [] for problem in problems[:batch_size]: # Generate with each persona for persona in AgentPersona: traj = self.generate_trajectory(problem, persona=persona) trajectories.append(traj) return trajectories

class TrajectoryValidator: """Validates quality of synthetic trajectories""" def __init__(self): self.realistic_patterns = self._load_patterns() def validate_trajectory(self, trajectory: Trajectory) -> Dict: """ Validate trajectory for realism and utility. Returns validation score and issues. """ issues = [] scores = { 'realism': 0.0, 'diversity': 0.0, 'utility': 0.0, 'overall': 0.0 } # Check realism realism_score = self._check_realism(trajectory) if realism_score < 0.5: issues.append("Low action realism") scores['realism'] = realism_score # Check diversity actions = [step[0] for step in trajectory.steps] diversity = len(set(actions)) / len(actions) if actions else 0 if diversity < 0.3: issues.append("Low action diversity") scores['diversity'] = diversity # Check utility if trajectory.success: utility = 0.9 else: utility = 0.3 scores['utility'] = utility # Overall scores['overall'] = ( 0.4 * realism_score + 0.3 * diversity + 0.3 * utility ) return { 'valid': scores['overall'] > 0.5, 'scores': scores, 'issues': issues } def _check_realism(self, trajectory: Trajectory) -> float: """Check if actions follow realistic patterns""" realism_score = 0.0 valid_actions = 0 for action, _ in trajectory.steps: if self._is_realistic_action(action): valid_actions += 1 realism_score = valid_actions / len(trajectory.steps) if trajectory.steps else 0 return realism_score def _is_realistic_action(self, action: str) -> bool: """Check if action is realistically described""" realistic_patterns = [ r'(scan|nmap)', r'(analyze|examine)', r'(connect|telnet)', r'(crack|bruteforce)', r'(exploit|execute)', r'(find|search)', r'(decrypt|decode)' ] action_lower = action.lower() for pattern in realistic_patterns: if re.search(pattern, action_lower): return True return False def _load_patterns(self) -> List[str]: """Load realistic action patterns""" return [] def filter_valid_trajectories(self, trajectories: List[Trajectory], min_score: float = 0.5) -> List[Trajectory]: """Filter trajectories by quality""" valid = [] for trajectory in trajectories: validation = self.validate_trajectory(trajectory) if validation['scores']['overall'] > min_score: valid.append(trajectory) return valid

class CyberZeroTrainer: """Trains cybersecurity agents on synthetic trajectories""" def __init__(self, agent_model, trajectory_dataset: List[Trajectory]): self.agent = agent_model self.trajectories = trajectory_dataset def prepare_training_data(self) -> Tuple[List, List]: """ Convert trajectories to training data. Returns (problem_contexts, action_sequences) """ contexts = [] sequences = [] for trajectory in self.trajectories: problem = trajectory.problem actions = [step[0] for step in trajectory.steps] # Context: problem description and category context = f"{problem.category}: {problem.description}" contexts.append(context) # Action sequence sequences.append(actions) return contexts, sequences def train(self, learning_rate: float = 1e-5, num_epochs: int = 3): """Train agent on trajectories""" contexts, action_sequences = self.prepare_training_data() optimizer = torch.optim.AdamW( self.agent.parameters(), lr=learning_rate ) for epoch in range(num_epochs): total_loss = 0.0 for context, actions in zip(contexts, action_sequences): # Encode problem problem_encoding = self.agent.encode_problem(context) # Predict next action at each step for step_idx, target_action in enumerate(actions): # Get prediction pred_action = self.agent.predict_next_action( problem_encoding, actions[:step_idx] ) # Compute loss loss = self._compute_loss(pred_action, target_action) optimizer.zero_grad() loss.backward() optimizer.step() total_loss += loss.item() avg_loss = total_loss / len(contexts) print(f"Epoch {epoch}: Loss = {avg_loss:.4f}") def _compute_loss(self, prediction, target) -> torch.Tensor: """Compute training loss""" # Simplified: real version would use cross-entropy return torch.tensor(0.0)

name	cyber-zero-runtime-free-agent-training
title	Cyber-Zero Training Cybersecurity Agents Without Runtime
version	0.0.2
engine	skillxiv-v0.0.2-claude-opus-4.6
license	MIT
url	https://arxiv.org/abs/2508.00910
keywords	["cybersecurity","agent-training","synthetic-data","persona-simulation","runtime-free"]
description	Framework for training cybersecurity agents without access to live environments. Uses CTF writeups and persona-driven LLM simulation to synthesize training trajectories, achieving performance matching proprietary systems like Claude-3.5-Sonnet.

name	cyber-zero-runtime-free-agent-training
title	Cyber-Zero Training Cybersecurity Agents Without Runtime
version	0.0.2
engine	skillxiv-v0.0.2-claude-opus-4.6
license	MIT
url	https://arxiv.org/abs/2508.00910
keywords	["cybersecurity","agent-training","synthetic-data","persona-simulation","runtime-free"]
description	Framework for training cybersecurity agents without access to live environments. Uses CTF writeups and persona-driven LLM simulation to synthesize training trajectories, achieving performance matching proprietary systems like Claude-3.5-Sonnet.

cyber-zero-runtime-free-agent-training

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Cyber-Zero: Training Cybersecurity Agents Without Runtime

Core Concept

Architecture Overview

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Cyber-Zero: Training Cybersecurity Agents Without Runtime

Core Concept

Architecture Overview

Implementation Steps

Practical Guidance

Reference

cyber-zero-runtime-free-agent-training

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Mais deste repositório

Cyber-Zero: Training Cybersecurity Agents Without Runtime

Core Concept

Architecture Overview

Implementation Steps

Mais deste repositório

Cyber-Zero: Training Cybersecurity Agents Without Runtime

Core Concept

Architecture Overview

Implementation Steps

Practical Guidance

Reference